[TriEmbed] Backup Power for Raspberry Pi 2

[John Vaughters]

Should have added this pic ealier.  


     On Wednesday, July 15, 2015 10:23 AM, John Vaughters via TriEmbed <triembed at triembed.org> wrote:
   

 Dwight,
A good method for dc power supply is to have two diodes in parallel. The primary source should have a higher voltage and will prevent the secondary source from suppling power. If the primary dies the secondary will kick in. So if the case is a wall power and battery power, then make sure you tie the grounds together and make sure the wall volatage is higher than the battery voltage.
John Vaughters 


     On Wednesday, July 15, 2015 10:14 AM, Dwight Morgan via TriEmbed <triembed at triembed.org> wrote:
   

 #yiv9613004538 #yiv9613004538 -- filtered {font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;}#yiv9613004538 p.yiv9613004538MsoNormal, #yiv9613004538 li.yiv9613004538MsoNormal, #yiv9613004538 div.yiv9613004538MsoNormal {margin:0in;margin-bottom:.0001pt;font-size:11.0pt;}#yiv9613004538 a:link, #yiv9613004538 span.yiv9613004538MsoHyperlink {color:blue;text-decoration:underline;}#yiv9613004538 a:visited, #yiv9613004538 span.yiv9613004538MsoHyperlinkFollowed {color:purple;text-decoration:underline;}#yiv9613004538 span.yiv9613004538EmailStyle17 {color:windowtext;}#yiv9613004538 .yiv9613004538MsoChpDefault {}#yiv9613004538 filtered {margin:1.0in 1.0in 1.0in 1.0in;}#yiv9613004538 div.yiv9613004538WordSection1 {}#yiv9613004538 Hi All:  I need a backup power supply for my Raspberry Pi 2. I don’t think I need something as large as those made for PCs. I think one more in line with that D cell powered one in my alarm clock or a little larger would work fine.   Anybody know how to make one or if there is one out there already? Feedback appreciated!  Thanks!  Dwight  
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